Nelson sits next to 3 phonetic neighbors — Nelsen, Kelson, and Welson are the closest matches by sound. Most share Nelson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Neil, son of the champion"
"from the city of Dax"
"group, band, team"
"Viking homeland (Scandinavia)"
"pure, innocent, righteous"
"modern American creation"
"son of the army ruler"
"home ruler"
"burdened, laden"
"enduring and beautiful"
"the fifth-born child"
"God is gracious"
"bright"
"God's peace, divine peace"
"treasurer, keeper of treasure"
"from the settlement by the stone"
"tile maker (short for Tyler)"
"gift"
"prince's town"
"mind, intellect, spirit"
"land of lakes"
Similar sound: These names share phonetic patterns with Nelson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Nelson.
Rhythm: Nelson is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.